Revert "SERVER-6246 Add usersInfo command"

This reverts commit 88b88bd49c2ecdc4a3f0be050360099401310566.
SERVER-6405: char* to StringData for some catalog methods
SERVER-6405: make Top::collectionDrop api easier to work with
SERVER-2996: re-enable RWLockTest2
SERVER-10520 Disable insecure SSL ciphers
SERVER-8864 SERVER-10739 Support concurrent SSL and non-SSL connections
SERVER-3579 - replace 10gen with mongodb
SERVER-3579 - replace mongo-10gen with mongodb-org
SERVER-3579 - replace mongo-10gen with mongodb-org in spec file
SERVER-963 replace mongodb-10gen with monogdb-org in debian postinst file
SERVER-3579 Missed a few 10gen package name references
SERVER-3579 don't remove postinst file if it's not there
SERVER-3579 remove extra cp command
more junk